Newcastle United have completed the signing of Ajax midfielder Siem de Jong. De Jong, 25, is the older brother of Luuk, who spent six goalless months on Tyneside last season and has been a long-term target for Newcastle. The Netherlands international joins for a fee around 7.5m Euros and has signed a five-year contract at St James’ Park. Rumours circulated on Monday night that de Jong had arrived in England ahead of talks with the Magpies and Alan Pardew was keen to get the deal done as quickly as possible. De Jong is best utilised as a number 10, which suggests that Pardew is planning a 4-2-3-1 system next season. One of the biggest failures of last season was not finding a consistent formation, so securing a player of de Jong’s quality to support a lone front man is a good move if it comes off. As well as having the creativity to play behind the striker, de Jong also boasts an impressive scoring record. His goal ratio at Ajax is better than one in three, which is excellent for an attacking midfielder. The challenge for de Jong is adapting to a new country and settling in. The six-cap Netherlands international became a fan favourite while at Ajax and will be hoping to do the same when he pulls on the black and white jersey for the first time.